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please help - loud bang, now car won't start


Guest chris t4

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So the damper has been run loose, and the clamping pressure on the trigger wheel has been lost so it came away from it's boss? I always TIG them together a bit better. Welding is a bit better than the crimping that Toyota use, but they are fine unless the damper comes loose. Let's hope it's not worn the nose of the crank or damaged the damper keyway.

 

Chris i have done a couple of supras now with this fault both single turbos and the crankbolt was tight on both.not sure on the cause but only needed to replace the crank gear.i have tig welded the one for my car just as a safe guard.

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Guest chris t4

ok thanks for that. well im still in the process of locating all the bits and im thinking that while everything is of i might as well put some alloy cam pulleys on. whifbits seem pretty sorted for supra bits, so ill try that steve guy first and see if he can sort me out a good price. cheers absz

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Chris i have done a couple of supras now with this fault both single turbos and the crankbolt was tight on both.not sure on the cause but only needed to replace the crank gear.i have tig welded the one for my car just as a safe guard.

 

Maybe the pulley and cam belt drive cog doesn't clamp the star wheel against the crank shoulder, I have never assembled them off the engine to see. If it doesn't that would explain why they can come loose with the damper bolt still tight. I have been TIG welding them onto their hub for years, as a safeguard. 2008 thread :) :-

 

http://www.mkivsupra.net/vbb/showthread.php?161424-Crank-Gear-Removal&highlight=trigger+TIG

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Guest chris t4

hi lads

here is an update on my car,, the car now runs drives as good as before but the red triangle stays on! and there is a noise that seems to come from the front of the motor once the car is put into drive, then when i put into nuetral it goes away (strange) at least its running but i dont like the noise its making.

could it be the tensioner worn? oh and now its got blue smoke on start up but only for a couple of seconds,, im not having much luck with it lol

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hi lads

here is an update on my car,, the car now runs drives as good as before but the red triangle stays on! and there is a noise that seems to come from the front of the motor once the car is put into drive, then when i put into nuetral it goes away (strange) at least its running but i dont like the noise its making.

could it be the tensioner worn? oh and now its got blue smoke on start up but only for a couple of seconds,, im not having much luck with it lol

 

For the red triangle I would check your brake fluid level.

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blue smoke is oil, this can be turbo oil seal or when just on start up is more often to be valve stem seals

 

:yeahthat:

 

If it's just on startup then it will probably be valve stem seals, if you get the replacement parts and do it yourself you can save a fortune, I'm no mechancic and I did my valve stem seals myself.

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